browser-mp4-to-audio-sample

This is demo page for testing how to extract audio from mp4 video file using js in browser.

There are several implementations:

• using AudioContext extracting wav 16kHz. Problem: file is sometimes bigger than full video file.
• using lamejs converting wav into mp3. Very slow.
• using ffmpeg.js. Very big ffmpeg.js needs to be downloaded 24Mb, or 8Mb zipped. Limited support on browsers: see https://github.com/ffmpegwasm/ffmpeg.wasm#installation

Building

Local env

Tested on linux. Make sure you have node installed. Run:

make prepare
make compile
make serve

Open http://localhost:3000

Docker

make prepare
make compile
cd build && make clean dbuild

Start the service with: docker run -p 3000:8000 ${USER}/browser-audio-extract:0.1.2. Version may differ.

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Author

Airenas Vaičiūnas

• github.com/airenas
• linkedin.com/in/airenas

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License

Copyright © 2021, Airenas Vaičiūnas. Released under the The 3-Clause BSD License.

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